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Dynamical Phases of Driven Vortices Interacting with Periodic Pinning

Gilson Carneiro
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Abstract

The finite temperature dynamical phases of vortices in films driven by a uniform force and interacting with the periodic pinning potential of a square lattice of columnar defects are investigated by Langevin dynamics simulations of a London model. Vortices driven along the [0,1] direction and at densities for which there are more vortices than columnar defects ($B>B_ϕ$) are considered. At low temperatures, two new dynamical phases, elastic flow and plastic flow, and a sharp transition between them are identified and characterized according to the behavior of the vortex spatial order, velocity distribution and frequency-dependent velocity correlation

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Gilson Carneiro. 2000-10-10. Dynamical Phases of Driven Vortices Interacting with Periodic Pinning. https://doi.org/10.1103/physrevb.62.r14661

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